Patents by Inventor Stephan RUPCHEV

Stephan RUPCHEV has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190330469
    Abstract: The invention relates to a polyurethane composition, which is used for the manufacture of products for the industry and households, in particular in the manufacturing of mattresses, sofas, seats, chairs, and underwear. The polyurethane foam composition, according to the invention consists of polyol, organic polyisocyanate, catalyst, foaming agent, polymerization initiator, stabilizer, additives, and contains powdered amber or powdered amber resin with particle size within the range of microns. The composition provides versatile application, possessing properties beneficial to health, such as stimulating metabolism, relieving asthmatic and allergic respiratory problems, helping the overcoming of physical pain, and eliminating negative energy.
    Type: Application
    Filed: September 15, 2016
    Publication date: October 31, 2019
    Inventors: Hristiyan KOSTOV, Stephan RUPCHEV